ABAP Select data from SAP table CELAUFK into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CELAUFK table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to CELAUFK. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the CELAUFK table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_CELAUFK TYPE STANDARD TABLE OF CELAUFK,
      WA_CELAUFK TYPE CELAUFK,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <CELAUFK> TYPE CELAUFK.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CELAUFK.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CELAUFK
  INTO TABLE IT_CELAUFK.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CELAUFK
*  INTO TABLE @DATA(IT_CELAUFK2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_CELAUFK INDEX 1 INTO DATA(WA_CELAUFK2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CELAUFK ASSIGNING <CELAUFK>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CELAUFK>-MANDT = 1.
<CELAUFK>-AUFNR = 1.
<CELAUFK>-AUART = 1.
<CELAUFK>-AUTYP = 1.
<CELAUFK>-BUKRS = 1.

ENDLOOP.

LOOP AT IT_CELAUFK INTO WA_CELAUFK.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CELAUFK-GSBER, sy-vline,
  WA_CELAUFK-SCOPE, sy-vline,
  WA_CELAUFK-KOKRS, sy-vline,
  WA_CELAUFK-OBJNR, sy-vline,
  WA_CELAUFK-ASTKZ, sy-vline,
  WA_CELAUFK-PLINT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CELAUFK you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_CELAUFK TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_CELAUFK INTO WA_CELAUFK.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CELAUFK-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CELAUFK-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SCOPE, internal->external for field SCOPE
CALL FUNCTION 'CONVERSION_EXIT_SCOPE_OUTPUT'
  EXPORTING
    input =                      WA_CELAUFK-SCOPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CELAUFK-SCOPE.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CELAUFK_STR, 
MANDT TYPE STRING,
AUFNR TYPE STRING,
AUART TYPE STRING,
AUTYP TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
SCOPE TYPE STRING,
KOKRS TYPE STRING,
OBJNR TYPE STRING,
ASTKZ TYPE STRING,
PLINT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CELAUFK_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_CELAUFK_STR-MANDT sy-vline 
WA_CELAUFK_STR-AUFNR sy-vline 
WA_CELAUFK_STR-AUART sy-vline 
WA_CELAUFK_STR-AUTYP sy-vline 
WA_CELAUFK_STR-BUKRS sy-vline 
WA_CELAUFK_STR-GSBER sy-vline 
WA_CELAUFK_STR-SCOPE sy-vline 
WA_CELAUFK_STR-KOKRS sy-vline 
WA_CELAUFK_STR-OBJNR sy-vline 
WA_CELAUFK_STR-ASTKZ sy-vline 
WA_CELAUFK_STR-PLINT sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.